package day11.day12;

import day11.USBFan;
import day11.Usb;

/**
 * @author oldliu
 * @since 1.0
 */
public class USBFanTEst {
    public static void main(String[] args) {
        Usb u=new USBFan("杨子");
        u.plugin();
        u.work();
        u.powerOn();
    }
}
